2 * (C)opyright MMV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * (C)opyright MMV-MMVI Nico Golde <nico at ngolde dot de>
4 * See LICENSE file for license details.
9 #include <netinet/in.h>
14 #include <sys/socket.h>
17 #define PINGTIMEOUT 300
20 enum { Tnick, Tuser, Tcmd, Tchan, Targ, Ttext, Tlast };
22 static char *server = "irc.oftc.net";
23 static int port = 6667;
24 static char *nick = NULL;
25 static char *fullname = NULL;
26 static char *password = NULL;
28 static char bufin[MAXMSG], bufout[MAXMSG];
29 static char channel[256];
31 static time_t trespond;
34 getline(int fd, unsigned int len, char *buf)
39 if(read(fd, &c, sizeof(char)) != sizeof(char))
43 while(c != '\n' && i < len);
49 pout(char *channel, char *msg)
51 static char timestr[18];
54 strftime(timestr, sizeof(timestr), "%a %R", localtime(&t));
55 fprintf(stdout, "%-12.12s: %s %s\n", channel, timestr, msg);
59 privmsg(char *channel, char *msg)
61 snprintf(bufout, sizeof(bufout), "<%12s> %s", nick, msg);
62 pout(channel, bufout);
63 snprintf(bufout, sizeof(bufout), "PRIVMSG %s :%s\r\n", channel, msg);
64 write(srv, bufout, strlen(bufout));
73 privmsg(channel, msg);
76 if((p = strchr(&msg[3], ' ')))
80 snprintf(bufout, sizeof(bufout), "%s\r\n", &msg[1]);
84 snprintf(bufout, sizeof(bufout), "JOIN %s\r\n", &msg[3]);
86 privmsg(&msg[3], p + 1);
92 snprintf(bufout, sizeof(bufout), "PART %s :%s\r\n", &msg[3], p);
94 snprintf(bufout, sizeof(bufout), "PART %s :sic\r\n", &msg[3]);
100 strncpy(channel, &msg[3], sizeof(channel));
103 snprintf(bufout, sizeof(bufout), "TOPIC %s :%s\r\n", &msg[3], p);
106 write(srv, bufout, strlen(bufout));
110 tokenize(char **result, unsigned int reslen, char *str, char delim)
117 for(n = str; *n == delim; n++);
119 for(i = 0; *n != 0;) {
130 if((i < reslen) && (p < n) && strlen(p))
132 return i; /* number of tokens */
138 char *argv[Tlast], *cmd, *p;
143 for(i = 0; i < Tlast; i++)
147 <bufout> ::= [':' <prefix> <SPACE> ] <command> <params> <crlf>
148 <prefix> ::= <servername> | <nick> [ '!' <user> ] [ '@' <server> ]
149 <command> ::= <letter> { <letter> } | <number> <number> <number>
150 <SPACE> ::= ' ' { ' ' }
151 <params> ::= <SPACE> [ ':' <trailing> | <middle> <params> ]
152 <middle> ::= <Any *non-empty* sequence of octets not including SPACE
153 or NUL or CR or LF, the first of which may not be ':'>
154 <trailing> ::= <Any, possibly *empty*, sequence of octets not including NUL or CR or LF>
157 if(msg[0] == ':') { /* check prefix */
158 p = strchr(msg, ' ');
160 for(++p; *p == ' '; p++);
162 argv[Tnick] = &msg[1];
163 if((p = strchr(msg, '!'))) {
171 for(p = cmd; p && *p != 0; p++)
172 if(*p == '\r' || *p == '\n')
175 if((p = strchr(cmd, ':'))) {
179 tokenize(&argv[Tcmd], Tlast - Tcmd, cmd, ' ');
181 if(!strncmp("PONG", argv[Tcmd], 5)) {
183 } else if(!strncmp("PING", argv[Tcmd], 5)) {
184 snprintf(bufout, sizeof(bufout), "PONG %s\r\n", argv[Ttext]);
185 write(srv, bufout, strlen(bufout));
187 } else if(!argv[Tnick] || !argv[Tuser]) { /* server command */
188 snprintf(bufout, sizeof(bufout), "%s", argv[Ttext] ? argv[Ttext] : "");
189 pout(server, bufout);
191 } else if(!strncmp("ERROR", argv[Tcmd], 6))
192 snprintf(bufout, sizeof(bufout), "-!- error %s",
193 argv[Ttext] ? argv[Ttext] : "unknown");
194 else if(!strncmp("JOIN", argv[Tcmd], 5)) {
195 if(argv[Ttext]!=NULL){
196 p = strchr(argv[Ttext], ' ');
200 argv[Tchan] = argv[Ttext];
201 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has joined %s",
202 argv[Tnick], argv[Tuser], argv[Ttext]);
203 } else if(!strncmp("PART", argv[Tcmd], 5)) {
204 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has left %s",
205 argv[Tnick], argv[Tuser], argv[Tchan]);
206 } else if(!strncmp("MODE", argv[Tcmd], 5))
207 snprintf(bufout, sizeof(bufout), "-!- %s changed mode/%s -> %s %s",
208 argv[Tnick], argv[Tcmd + 1],
209 argv[Tcmd + 2], argv[Tcmd + 3]);
210 else if(!strncmp("QUIT", argv[Tcmd], 5))
211 snprintf(bufout, sizeof(bufout), "-!- %s(%s) has quit \"%s\"",
212 argv[Tnick], argv[Tuser],
213 argv[Ttext] ? argv[Ttext] : "");
214 else if(!strncmp("NICK", argv[Tcmd], 5))
215 snprintf(bufout, sizeof(bufout), "-!- %s changed nick to %s",
216 argv[Tnick], argv[Ttext]);
217 else if(!strncmp("TOPIC", argv[Tcmd], 6))
218 snprintf(bufout, sizeof(bufout), "-!- %s changed topic to \"%s\"",
219 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
220 else if(!strncmp("KICK", argv[Tcmd], 5))
221 snprintf(bufout, sizeof(bufout), "-!- %s kicked %s (\"%s\")",
222 argv[Tnick], argv[Targ],
223 argv[Ttext] ? argv[Ttext] : "");
224 else if(!strncmp("NOTICE", argv[Tcmd], 7))
225 snprintf(bufout, sizeof(bufout), "-!- \"%s\")",
226 argv[Ttext] ? argv[Ttext] : "");
227 else if(!strncmp("PRIVMSG", argv[Tcmd], 8))
228 snprintf(bufout, sizeof(bufout), "<%12s> %s",
229 argv[Tnick], argv[Ttext] ? argv[Ttext] : "");
230 if(!argv[Tchan] || !strncmp(argv[Tchan], nick, strlen(nick)))
231 pout(argv[Tnick], bufout);
233 pout(argv[Tchan], bufout);
237 main(int argc, char *argv[])
242 struct sockaddr_in addr = { 0 };
246 nick = fullname = getenv("USER");
247 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
248 switch (argv[i][1]) {
250 fputs("usage: sic [-s server] [-p port] [-n nick]"
251 " [-k keyword] [-f fullname] [-v]\n", stderr);
258 port = atoi(argv[++i]);
264 password = argv[++i];
267 fullname = argv[++i];
270 fputs("sic-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
277 if((srv = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
278 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
281 hp = gethostbyname(server);
282 addr.sin_family = AF_INET;
283 addr.sin_port = htons(port);
284 bcopy(hp->h_addr, &addr.sin_addr, hp->h_length);
285 if(connect(srv, (struct sockaddr *) &addr, sizeof(struct sockaddr_in))) {
287 fprintf(stderr, "sic: cannot connect server '%s'\n", server);
293 snprintf(bufout, sizeof(bufout),
294 "PASS %s\r\nNICK %s\r\nUSER %s localhost %s :%s\r\n",
295 password, nick, nick, server, fullname ? fullname : nick);
297 snprintf(bufout, sizeof(bufout), "NICK %s\r\nUSER %s localhost %s :%s\r\n",
298 nick, nick, server, fullname ? fullname : nick);
299 write(srv, bufout, strlen(bufout));
301 snprintf(ping, sizeof(ping), "PING %s\r\n", server);
303 setbuf(stdout, NULL); /* unbuffered stdout */
310 i = select(srv + 1, &rd, 0, 0, &tv);
314 perror("sic: error on select()");
317 if(time(NULL) - trespond >= PINGTIMEOUT) {
318 pout(server, "-!- sic shutting down: parseing timeout");
321 write(srv, ping, strlen(ping));
324 if(FD_ISSET(srv, &rd)) {
325 if(getline(srv, sizeof(bufin), bufin) == -1) {
326 perror("sic: remote server closed connection");
330 trespond = time(NULL);
332 if(FD_ISSET(0, &rd)) {
333 if(getline(0, sizeof(bufin), bufin) == -1) {
334 perror("sic: broken pipe");